diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/Kconfig | 29 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 10 |
2 files changed, 0 insertions, 39 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 449d0b9cac1..36e0675be9f 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -152,35 +152,6 @@ config MD_RAID456 If unsure, say Y. -config MD_RAID5_RESHAPE - bool "Support adding drives to a raid-5 array" - depends on MD_RAID456 - default y - ---help--- - A RAID-5 set can be expanded by adding extra drives. This - requires "restriping" the array which means (almost) every - block must be written to a different place. - - This option allows such restriping to be done while the array - is online. - - You will need mdadm version 2.4.1 or later to use this - feature safely. During the early stage of reshape there is - a critical section where live data is being over-written. A - crash during this time needs extra care for recovery. The - newer mdadm takes a copy of the data in the critical section - and will restore it, if necessary, after a crash. - - The mdadm usage is e.g. - mdadm --grow /dev/md1 --raid-disks=6 - to grow '/dev/md1' to having 6 disks. - - Note: The array can only be expanded, not contracted. - There should be enough spares already present to make the new - array workable. - - If unsure, say Y. - config MD_RAID6_PQ tristate diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 062df846fd6..fb11c13eb69 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -948,7 +948,6 @@ static int grow_stripes(raid5_conf_t *conf, int num) return 0; } -#ifdef CONFIG_MD_RAID5_RESHAPE static int resize_stripes(raid5_conf_t *conf, int newsize) { /* Make all the stripes able to hold 'newsize' devices. @@ -1073,7 +1072,6 @@ static int resize_stripes(raid5_conf_t *conf, int newsize) conf->pool_size = newsize; return err; } -#endif static int drop_one_stripe(raid5_conf_t *conf) { @@ -4822,7 +4820,6 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors) return 0; } -#ifdef CONFIG_MD_RAID5_RESHAPE static int raid5_check_reshape(mddev_t *mddev) { raid5_conf_t *conf = mddev_to_conf(mddev); @@ -4967,7 +4964,6 @@ static int raid5_start_reshape(mddev_t *mddev) md_new_event(mddev); return 0; } -#endif /* This is called from the reshape thread and should make any * changes needed in 'conf' @@ -5289,11 +5285,9 @@ static struct mdk_personality raid6_personality = .sync_request = sync_request, .resize = raid5_resize, .size = raid5_size, -#ifdef CONFIG_MD_RAID5_RESHAPE .check_reshape = raid5_check_reshape, .start_reshape = raid5_start_reshape, .finish_reshape = raid5_finish_reshape, -#endif .quiesce = raid5_quiesce, .takeover = raid6_takeover, .reconfig = raid6_reconfig, @@ -5314,11 +5308,9 @@ static struct mdk_personality raid5_personality = .sync_request = sync_request, .resize = raid5_resize, .size = raid5_size, -#ifdef CONFIG_MD_RAID5_RESHAPE .check_reshape = raid5_check_reshape, .start_reshape = raid5_start_reshape, .finish_reshape = raid5_finish_reshape, -#endif .quiesce = raid5_quiesce, .takeover = raid5_takeover, .reconfig = raid5_reconfig, @@ -5340,11 +5332,9 @@ static struct mdk_personality raid4_personality = .sync_request = sync_request, .resize = raid5_resize, .size = raid5_size, -#ifdef CONFIG_MD_RAID5_RESHAPE .check_reshape = raid5_check_reshape, .start_reshape = raid5_start_reshape, .finish_reshape = raid5_finish_reshape, -#endif .quiesce = raid5_quiesce, }; |